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🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
224
Account age
3 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Tamas K Lengyel
Known for
3 views
The solution was: Nothing! It turns out that due to the undefined behavior of the NULL-pointer dereference in the beginning of main, clang's optimizer removes main entirely and you just get a call to _fini! No compile time warning, no runtime warning. All is fine in the land of C! 😜
1 views
Perhaps even worse, even if you ask clang to produce a compiler warning for the undefined behavior with -Wnull-dereference you get nothing. At least gcc still does the right thing there:
📊 Post engagement
Recent posts · likes + reposts
Oct 18latest
3
Avg engagement / post
2–4
Typical post (engagement)
1.3%
Engagement vs followers
70/100
Consistent reach
Nov 2022
On Mastodon since
Half of recent posts land between 2 and 4 likes + reposts (median 3) — a dependable floor a sponsored post can count on.
🔥 Top post: Now this looks like a pretty kick ass project: FUZZUER: Enabling · 8 likes + reposts
📊 Activity & format
Posting cadence
0.09 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 10 text · 2 image · 0 video.
Follower / following
0.6×
Follows 345 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
OSS-CRS: Open Source Cyber Reasoning System Framework
https://github.com/ossf/oss-crs
https://arxiv.org/pdf/2603.08566
OSS-CRS is a standard orchestration framework for building and running LLM-based autonomous bug-finding and bug-fixing s…
Finally a paper on malware fuzzing! PFUZZER: Practical, Sound, and Effective Multi-path Analysis of
Environment-sensitive Malware with Coverage-guided Fuzzing https://www.diag.uniroma1.it/~delia/papers/eurosp25-pfuzzer.pdf
Perhaps even worse, even if you ask clang to produce a compiler warning for the undefined behavior with -Wnull-dereference you get nothing. At least gcc still does the right thing there:
The solution was: Nothing! It turns out that due to the undefined behavior of the NULL-pointer dereference in the beginning of main, clang's optimizer removes main entirely and you just get a call to _fini! No compile time warning, no runt…
What do you think happens when you compile this program with clang like this & run it?
// clang -O2 -o yikes yikes.c
#include <stdio.h>
int main(void)
{
int *yikes = NULL;
*yikes = 1;
fprintf(stdout, "Hello world!\n");
retu…
I'm giving a talk about running honeypots on your router with OpenWrt and OpenCanary at #OSSummit later today! Check it out, slides are online https://ossna2024.sched.com/event/1aBOF/network-intrusion-detection-101-with-openwrt-and-opencan…
How ISO C became unusable for operating systems development https://arxiv.org/pdf/2201.07845.pdf
[...]
it is currently argued that the standard interpretation allows implementations to take any action at all, not just for (say) an overflow…
The Linux documentation folder is such a fun read: https://www.kernel.org/doc/Documentation/firmware-guide/acpi/osi.rst
[...]
For an OS-specific interface, the ACPI spec said that the BIOS and the OS were to agree on a string of the form s…
I wrote up some notes on how to run honeypots using OpenCanary on OpenWrt, including making honeypots appear scattered across your LAN and even automatically quarantining devices on your WiFi network if they connect to honeypots. https://o…
DRAKVUF on QubesOS 👏 https://github.com/scrubbedha/Qubes_Drakvuf
My talk from Linux Security Summit Europe '23 can now be watched on YouTube: https://www.youtube.com/watch?v=J2X1yItdxvo. Slides are available at https://www.slideshare.net/tklengyel/estimating-security-risk-through-repository-mining.
Most…
Perhaps even worse, even if you ask clang to produce a compiler warning for the undefined behavior with -Wnull-dereference you get nothing. At least gcc still does the right thing there:
The solution was: Nothing! It turns out that due to the undefined behavior of the NULL-pointer dereference in the beginning of main, clang's optimizer removes main entirely and you just get a call to _fini! No compile time warning, no runt…
What do you think happens when you compile this program with clang like this & run it?
// clang -O2 -o yikes yikes.c
#include <stdio.h>
int main(void)
{
int *yikes = NULL;
*yikes = 1;
fprintf(stdout, "Hello world!\n");
retu…
I'm giving a talk about running honeypots on your router with OpenWrt and OpenCanary at #OSSummit later today! Check it out, slides are online https://ossna2024.sched.com/event/1aBOF/network-intrusion-detection-101-with-openwrt-and-opencan…
How ISO C became unusable for operating systems development https://arxiv.org/pdf/2201.07845.pdf
[...]
it is currently argued that the standard interpretation allows implementations to take any action at all, not just for (say) an overflow…
The Linux documentation folder is such a fun read: https://www.kernel.org/doc/Documentation/firmware-guide/acpi/osi.rst
[...]
For an OS-specific interface, the ACPI spec said that the BIOS and the OS were to agree on a string of the form s…
I wrote up some notes on how to run honeypots using OpenCanary on OpenWrt, including making honeypots appear scattered across your LAN and even automatically quarantining devices on your WiFi network if they connect to honeypots. https://o…
DRAKVUF on QubesOS 👏 https://github.com/scrubbedha/Qubes_Drakvuf
My talk from Linux Security Summit Europe '23 can now be watched on YouTube: https://www.youtube.com/watch?v=J2X1yItdxvo. Slides are available at https://www.slideshare.net/tklengyel/estimating-security-risk-through-repository-mining.
Most…
🐘 Community & instance
Home server
discuss.systems
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 3 views per post.
📤Posts about 0.1× per week.
🕵️ Fake follower check
Estimated52/100
Fair
Credibility score
76%
Mixed
Real audience
Medium
Fake-follower risk
High
Data confidence
- Est. 76% real, active audience · Medium fake-follower risk.
- Low engagement (~1.3% of followers engage each post) — a sign of an inflated or inactive audience.
- Verified account.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Sr Principal Security Engineer at Oracle. Maintainer of Xen, DRAKVUF, LibVMI.
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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Frequently asked questions
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Tamas K Lengyel has 224 followers on Mastodon.
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